2013 - Started all 10 games at cornerback for the Lions as a junior, Matlock tied for 14th on the team in tackles with 17, including 14 solo. Tied for the team lead in pass breakups with 10 while notching an interception and a sack for a loss of eight yards on the year.

2012 - Started all 11 games at cornerback for the Lions as a sophomore, Matlock finished tied for seventh on the team in total tackles with 32, including 22 solo. Also had three pass break-ups, a interception, a forced fumble, a blocked kick and half a tackle for loss on the year. Had a season-high 9 tackles against Northwest Missouri. Returned interception in season-opener at Central Oklahoma 25 yards while blocking a kick against Southwest Baptist.

2011- Appeared in all 10 games for MSSU as a true freshman, with 8 starts, Matlock finished fifth on the team in total tackles with 51 (35 solo), 8 pass breakups, 1 forced fumble, and 1 interception. Had a season-high 11 tackles vs. Missouri Western.

Prior To Southern - Matlock played for coach Barry Norton at Texas HS … As a senior, Matlock was a first team All-District pick, as well as the Texas HS Defensive Back of the Year … A member of the National Honor Society and the Avid Program, Matlock is undecided on his future major at Southern and is the son of Brian Witcher and Nancy Matlock.